• WaterGems: Pump controls based off volume pumped, any ideas?

    We have two water pump stations both pumping to an elevated reservoir with the same on/off relative levels, however, PS1 system is fed from elevated reservoir and only needs boosting during peak flows, while PS2 system is fed via a large ground reservoir…
  • System curve in variable flow closed pumping systems

    Hi all, I am new to the forum, I came here because I've being trying to figure out how to plot the system "cloud" around the pump system curve on closed systems with variable flow. According to ASHRAE (–ASHRAE-HVAC 2008-Systems and Equipment fig. 20,…